What Nicotine Shots Do You Need for a Longfill

What Nicotine Shots Do You Need for a Longfill

What Nicotine Shots Do You Need for a Longfill? | Dispergo Vaping
Consumer guide • Nicotine shots

What nicotine
shots do you need
for a longfill?

The practical UK answer for every 60ml longfill bottle. Three 10ml shots is the format, freebase or nic salt is the choice plus your Mixer Kit handles the strength. Here is how to pick the right combination for your device.

Updated: April 2026
Written by: Josh Douglas, Dispergo CEO
For: Adult longfill users (18+)
The short answer

A 60ml longfill with 30ml of concentrate needs three 10ml nicotine shots to finish it. Two types are available on the UK market. Freebase 18mg shots for sub-ohm plus MTL freebase vapers. Nicotine salt 10mg shots for pod plus MTL nic salt vapers. Every Nixer Mixer Kit ships with three pre-calibrated 10ml bottles so the finished strength matches the number printed on the box. No maths, no measuring, no risk of going over the UK 20mg/ml legal cap.

The shot numbers

Three numbers
every longfill user should know

Shot count, shot volume plus the UK strength ceiling. The three numbers that define every nic shot decision.

3

Shots per longfill

A 60ml bottle with 30ml of concentrate takes exactly three 10ml shots. No more, no fewer.

10ml

Shot bottle size

The TPD-mandated maximum size for any UK nicotine-containing bottle sold on the market.

20mg/ml

UK strength cap

The legal ceiling for nicotine concentration in any finished e-liquid. Mixer Kits sit well under this.

The detailed answer

The longfill format is built around three shots. Always three.

A UK longfill comes in a 60ml bottle with 30ml of concentrate pre-loaded from the factory. The remaining 30ml is left empty on purpose. That empty space is designed to hold exactly three 10ml bottles of base liquid which contain your chosen nicotine shots. Three in, bottle full, finished at 60ml. Any more than three overflows the bottle plus risks pushing the finished liquid above the UK legal ceiling.

What changes from one longfill to the next is not the number of shots but the type plus the strength inside each shot bottle. Those two choices decide whether the finished liquid suits a sub-ohm mod, a pod kit, an MTL device or a zero-nicotine vape experience for someone stepping down.

The cleanest way to think about a Mixer Kit is as a pre-calibrated three-bottle recipe. A Nixer 9mg Freebase 50/50 kit contains three 10ml bottles of 50/50 freebase base which between them deliver exactly 9mg of nicotine across the finished 60ml. A Nixer 5mg Nic Salt kit does the same maths with a different nicotine type. You do not need to know the arithmetic because the box has already done it for you.

Freebase or nicotine salt: which type suits me?

Device type is the decider. Freebase nicotine delivers a sharper throat hit plus slower absorption. It suits higher-power sub-ohm setups that can handle the kick. Nicotine salt delivers a smoother throat hit plus faster absorption. It suits pod kits and MTL devices where you want satisfaction from a small puff without a cough attack.

  • Sub-ohm mod with a tank. Freebase 70/30 Mixer Kit at 3mg or 6mg finished.
  • MTL pod kit for quitting smoking. Nicotine salt 50/50 Mixer Kit at 10mg or 20mg equivalent.
  • MTL mouth-to-lung device with coils. Freebase 50/50 Mixer Kit at 6mg or 9mg finished.
  • Stepping down from nicotine. Freebase 50/50 Mixer Kit at 0mg or 3mg finished.
UK authority source check. The 10ml nicotine bottle size limit plus the 20mg/ml strength ceiling are set out in the Tobacco and Related Products Regulations 2016 enforced by the MHRA (gov.uk). Nicotine salt was developed by Juul Labs plus is now widely used across the UK pod vaping market. All Nixer Mixer Kits are manufactured in the UK by Dispergo Vaping inside the TPD limits.
Visual strength guide

Every Nixer Mixer Kit
decoded at a glance

Each row shows the three 10ml bottles inside that Mixer Kit plus the finished strength you end up with in your 60ml bottle.

Inside every 60ml finished bottle

Pick your kit, see your shots

0mg base
18mg freebase shot
10mg nic salt shot
0mg Freebase 50/50Pod & MTL, nicotine-free
0mg
0mg
0mg
0mg
finished in 60ml
3mg Freebase 50/50Pod & MTL, light
0mg
0mg
18
3mg
finished in 60ml
6mg Freebase 50/50Pod & MTL, medium
0mg
18
18
6mg
finished in 60ml
9mg Freebase 50/50Pod & MTL, strong
18
18
18
9mg
finished in 60ml
3mg Freebase 70/30Sub-ohm, light
0mg
0mg
18
3mg
finished in 60ml
6mg Freebase 70/30Sub-ohm, medium
0mg
18
18
6mg
finished in 60ml
5mg Nic Salt 50/50Pod & MTL salt
0mg
0mg
10
5mg
nic salt in 60ml
10mg Nic Salt 50/50Pod & MTL salt, strong
10
10
10
10mg
nic salt in 60ml
The two shot types

Freebase vs
nicotine salt

The practical differences between the two shot types every UK vaper needs to know before they pick a Mixer Kit.

Freebase shot

Freebase nicotine

The original form of nicotine used in vape juice. Delivers a sharper throat hit plus slower absorption.

Shot strength
18mg
Best for
Sub-ohm

Signature traits

  • Sharper throat hit. Noticeable kick on the inhale that mimics the feel of smoking.
  • Slower absorption. Takes 30 to 60 seconds to feel the nicotine hit.
  • Big cloud production. Works with high VG ratios for sub-ohm devices.
  • Flavour-forward. Does not mask the flavour concentrate as much as nic salt.

Ideal device

  • Sub-ohm mods with 0.2-0.4 ohm coils. Running at 40 watts or more.
  • Direct-to-lung MTL kits. Running at around 15 to 25 watts.
Nic salt shot

Nicotine salt

Nicotine bonded with benzoic or levulinic acid. Delivers a smoother throat hit plus faster absorption.

Shot strength
10mg
Best for
Pod kits

Signature traits

  • Smooth throat hit. Minimal scratch even at the 20mg cap.
  • Faster absorption. Peaks within 10 to 15 seconds of inhaling.
  • Better for quitting smoking. The rapid kick closer mimics a cigarette.
  • Lower power devices only. Not designed for sub-ohm coils.

Ideal device

  • Pod kits with 0.8-1.2 ohm coils. Running at around 10 to 15 watts.
  • Mouth-to-lung devices at low wattage. Anything you would compare to a cigarette draw.
Skip the maths

Every Nixer kit
ships with the right shots

Pick your longfill flavour, pick the Mixer Kit at your chosen strength plus the three correctly calibrated 10ml shots come in the box. No guessing, no extra buying, no over-strength risk.

If the range of kit types feels overwhelming the simplest route is to browse our Nixer longfill collection where each flavour page lists the compatible Mixer Kits by device type. Filter by pod or sub-ohm and the right shots are already selected for you.

Pick the right shot

Which shot type
for your vaping style?

For ex-smokers • first-time vapers

I want the nicotine hit fast

Cravings need to be cut quickly. A smooth strong hit within 10 seconds matters more than cloud production.

10mg Nic Salt 50/50
For sub-ohm vapers • cloud chasers

I want clouds plus flavour

Big draw, low resistance coils, tank-based setup. Focus is on flavour depth plus vapour production not throat kick.

3-6mg Freebase 70/30
For MTL vapers • step-down users

I want a cigarette-like draw

Mouth-to-lung device, moderate nicotine plus a familiar cigarette-style inhale. Balance between throat hit plus smoothness.

6-9mg Freebase 50/50

For the wider picture on every aspect of longfills plus Nixer including mixing, steeping plus flavour pairings, head to our full Nixer vape review hub where each practical question has its own in-depth article covering the UK market specifically.

Part of the hub

Back to the Nixer Vape Review hub

This article is one chapter inside our complete Nixer knowledge base. Head back to the hub for the full index covering longfill basics, strengths, mixing, flavours plus every Mixer Kit variant.

Keep reading

More on strengths
& shots

Once you know which shot type suits you, our guide to what strength you can make your Nixer longfill walks through every finished strength option from 0mg up to 10mg nic salt. If you are wondering whether the Mixer Kit is enough or you need to top up with separate shots, our explainer on whether you need extra VG or nic shots for Nixer covers the short answer (no) plus the longer explanation. Plus if the whole process is new to you, how to mix Nixer longfills with the Nixer Mixer Kit walks through the four-step method.

Frequently asked

Nic shot questions

What nicotine shots do you need for a longfill?
A 60ml longfill with 30ml of concentrate needs three 10ml nicotine shots to fill it. The three shots go into the empty 30ml space so the finished bottle holds 60ml of ready-to-vape e-liquid. Each shot is either 18mg freebase nicotine for sub-ohm and MTL users or 10mg nicotine salt for pod and MTL users. Every Nixer Mixer Kit ships with the correct three bottles pre-calibrated at your chosen strength.
What is the difference between freebase and nicotine salt shots?
Freebase is the original form of nicotine used in vape juice. It gives a sharp throat hit plus slower absorption which suits sub-ohm devices. Nicotine salt is nicotine bonded with benzoic or levulinic acid. It gives a smoother throat hit plus faster absorption which suits pod kits and MTL vaping. Longfills support both. You pick the shot type when you choose your Mixer Kit.
How many shots go into a 60ml longfill?
Exactly three 10ml bottles. The 60ml longfill contains 30ml of concentrate from the factory. The three 10ml shots add up to 30ml plus fill the bottle to the top. Adding a fourth shot overflows the bottle plus risks pushing the finished liquid above the UK 20mg/ml legal cap.
What strengths are Nixer Mixer Kits available in?
Nixer ships in nine different Mixer Kit variants. Freebase 50/50 comes in 0mg, 3mg, 6mg plus 9mg for pod and MTL devices. Freebase 70/30 comes in 3mg plus 6mg for sub-ohm devices. Nicotine salt 50/50 comes in 5mg plus 10mg including Ice variants for pod and MTL devices. The final bottle strength matches the number printed on the Mixer Kit box.
Can I use any nic shot with a longfill?
Technically yes but we do not recommend it. A Nixer longfill is calibrated against Nixer Mixer Kits so the VG/PG ratio, nicotine strength plus flavour balance all work together. Mixing with a random 18mg shot from another brand can throw the ratio off, dilute the flavour wrongly or push the finished liquid over the 20mg/ml UK cap. The Mixer Kit removes every one of those risks.